Hi! With Thunderbird 102.8.0, since a few months, attachments are getting truncated to a few kB on Yahoo IMAP sync. If there are more attachments above a total of 314 kB, only the first one is shown, and truncated to something less than 314 kB. The first time that it happened I had Thunderbird 86 that came with Ubuntu 16.04. It once happened also to the e-mail headers to get corrupted/misinterpreted, so no sender or subject appeared, only IP address. It seems this is due some changes with Yahoo itself, but the problem does not occur in Microsoft Outlook 2019. I've installed Thunderbird 102 in hope that it solves this problem but it doesn't, large attachment systematically get truncated, and the mail headers that got corrupted in version 86 still got corrupted here; also in subsequent e-mails. Again, no problem with Microsoft Outlook or Yahoo webmail. Rebuilding the IMAP mailbox from scratch does not help, the same e-mails get corrupted. Might it be some characters in the e-mails/encoded attachments that are interpreted as breaks or commands?